Method for the production of formed blanks upon gathering-irons.



r I B. D. CHAMBERLIN; METHOD FOR THE PRODUCTION OFFORMED BLANKS UPONGATHERING moms.

AFPJCATION- FILED FEB; 1. 19:2.

Patented July 27,1915.

' a SHEETS-SHEET 1.

B. 0. CHAMBEBLIN. METHOD FORLTHE PRODUCTION OF ,FORME'D BLANKS UPONGATHERING IRONS.

' APPLICATION FRED FEB. 1. 1912. I l lfil u -Patented'Ju1y.27,1915..

n z a a? 34 3? 27/7 0. -CHAMBERLIN. METHOD FOR THE PRODUCTION OF FORMEDBLANKS UPDN GATHERING IRONS.

' Patehted July 27, 1915.

-3 SHEETS-SHEET 3.

APPLICAT'ION FILED FEB; 1. 1912,

BENJAMIN OHAMBERLIN, OF CORNING, NEW YORK, ASSIGNOR'TO EMIPIRE MACHINECOMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

METHOD FOR THE PRODUCTION OF FORMED BLANKS UPON GATHERING-IRONS.

Specification of Letters Patent.

Patented July 2?, 1915.

Application filed February 1, 1912. Serial No. 674,814.

T all whom it may concern:

Be it known that I, BENJAMIN D. CHAM- BERLIN, a citizen of the UnitedStates, and a resident of Corning, county of Steuben, and State of NewYork, have invented certain new and useful Improvements in Methods forthe Production of Formed Blanks Upon Gathering-Irons, of which thefollowing is a specification.

My invention has for its object to provide a' new and improved processfor shaping and sizing blanks upon the ends of irons, and while it hasspecial reference to a process and apparatus in which a blow-pipe whichhas a batch of glass gathered thereon and roughly marvered to generallyshape it, has such rough marvered blank gaged as to size and shape andsubsequently again marvered to further produce a homogeneous gatherpreliminary to a blowing operation, it is not limited to such marveringpreceding or following the gaging or the blowing, as my invention alsocontemplates the afiixing of the glass to the iron in any desired way,its entire working preliminary to final shaping being due merely to thegaging. Hence, although I have in the accompanying drawings shown and inthe following specification will describe, my gaging invention asassociated with marvering means, it will be understood that I do not inthis respect restrict my invention to such. association.

The particularinvention here sought to be covered is the gaging of abatch of glass by molding it in a suitable mold cavity. It is desirablein the successful performance of the process here shown that the contactbetween the mold and gather at any time be limited in duration, asotherwise the mold might cause local cooling of the glass if chilled andif hot might adhere thereto. Again rotation ofthe glass is necessary tocounteract the flow thereof, and if there be relative rotation betweenthe gage mold and the gather, and contact between them is prolonged itmight result in a twisting of the gather which is detrimental to thefinished product. Neither of these objections however would bepresent inthe same degree if the momentary contact between the gather and the gagemold be repeated at short intervals apart, each of the contacts beingmomentary. I

Referring to the accompanying drawings in which corresponding parts aredesignated by corresponding marks of reference and in which I have showna machine adaptedto' carry out the process hereafter dc scribed Figure 1is a front elevation. Fig. 2 is a fragmental section on lines m w ofFigs. 1 and 4: showing the blow-pipe in a position'to have the blankthereon gaged. Fig. 3 is a fragmental section similar to that shown inFig. 2, but showing the parts in a position they momentarily assumeduring the gaging. Fig. 4 is a fragmental rear elevation, correspondingto the position of Figs. 1 and 3. Fig. 5 is a view similar to Fig. l,but showing the position of parts at a time corresponding to that ofFig. 3. Fig. 6 is a section on line m m"of Fig. 2. Fig. 7 is'a similarsection on line {DJ-{E7 of Fig. 2. Figs. 8 8 8. and 8 representsuccessive steps in the formation of a blank in the machine hereindescribed. Fig. 9 is a diagrammatic view illustrating a general type ofmachine in which the present invention may be embodied.

For the purpose of facilitating the descriptionof my invention I willstate that it may be performed on a machine of the general type shown inPatent No. 1,124,698, dated'J an. 12, 1915, which machine is showndiagrammatically in Fig. 9, of the accompanying drawings. In that figurea removable blow-pipe 1 is carried in the blow-pipe frame 2, mounted ona horizontal pivot 3, the gather end of the blow-pipe being adapted tobe swung upwardly through a limited vertical arc from the normalhorizontal position in which it is loaded into the blowpipeframe, andthen downwardly, whereby the gather may be presented to a mold 4, thelatter occurring when the blow-pipe is vertical. The movement of theblow-pipe is shown as due to a rack sector 5, actuated by a cam disk 6,the latter being driven in a predetermined manner by suitable mecha nismnot necessary to here describe. The blow-pipe frame carries on one endan air chuck '7 and at the other end a support 8 which grasps theblow-pipe adjacent to its gather end.

In carrying out my invention on such a machine I secure thereto a frame11 which extends radially upward on an incline adjacent to the pivotalmounting of the blow} for certain mechanisms hereinbe'fore as:

' is secured to the bracket 16 and the other scribed. On the outer endof the frame is mounted a casting 12, having guided in its rear face aslide 13, the outer end of which isiformed into a forwardly projectingarm 13*, carrying the gage mold 14, having a smooth internal cavity of aproper size and shape, dependent upon the blank which is to be formed.The slide 13 is held in place upon the rear of the casting 12 by a coverplate 15, and in the rear of such cover plate are the toggle levers 16and 16*, the former of which is pivoted to the inner end of the slide at16", while the latter is pivoted on the pin 16 projecting rearwardlyfrom the cover plate and having its rear end supported in a bracket 16Encircling the pin 16is thehelical spring 17, one end of which end ofwhich is attached to the lever 16 and tends to throw the same to theposition shown in dotted lines in Fig. 5. The spring 17 thus serves asan actuator for the gage 14.

Mounted upon the pin 16 in the rear of the lever 16 is a bell cranklever 18, the upper end of which carries a pivoted dog 19, the inner endof which has a notch adapted to engage a pin 19 on the lever 16, whilethe other end of the dog extends outwardly and is adapted to contactwith a trip 19 secured to the cover plate. The lower arm of the bellcrank 18 is pivoted to the outer end of a link 20, the inner end ofwhich is pivoted to the vertical arm of a bell crank 21, pivoted at 21*,on the frame of the machine and the horizontal arm of which projectsinto proximity to the cam disk 6. The disk has upon its front face a camtrack 22, which is adapted, in the rotation of the disk, to vibrate thebell crank 21 and thus draw the link 20 inwardly, whereby the bell crank18 will be swung through a certain arc. The arrangement of the cam trackis such that starting with the parts in their normal position, shown inFigs. 1 and 4, when the gather end of the blow-pipe is swung upwardlyand comes into axial alinement with the gaging mold, a projection 22 onsuch cam run will strike the horizontal arm of the bell crank 21 andthus oscillate the upper end of the bell crank 18 to its most outwardposition.

Upon the continued movement of the cam plate, after the blow-pipe hasswung to its highest position and in returning has passed the gage mold,the upper arm of the bell crank 21 will move the link 20 outwardly, thismovement being caused bythe proper shaping of the cam track and thecontracting spring 23, w ich is attached to the lower arm of the bellcrank 21. Subsequent movement will again move the bell crank 21 inwardlyand restorethe bell crank 18 to normal position. The movement of theupper end of the hell crank 18 to its outmost position, as beforedescribed, causes the tail of the dog 19 to bear upon a trip 19 and thusrelease the notch 19 on the dog from the pin 19 on the lever 16, withwhich it is in engagement in the normal position of the mament) and isthen, by the continued movement of the levers, thrown outwardly, beingrestored to normal position. Inasmuch as the release of the togglelevers by the described movement of the bell crank 18 takes place whenthe blow-pipe by its movement has been brought into axial alinement withthe gage mold, the latter will be projected on to the glass upon theblow-pipe and will be instantly withdrawn therefrom. The inward movementof the upper end of the bell crank lever 18 after the blow-pipe on itsreturn movement has passed the gage mold will bring the partsto theposition shown in dotted lines in Fig. 5, in which the dog 19 will againengage the pin 19 on the toggle lever 16*, and then the subsequentoutward movement of the upper end of such bell crank 18 will by theengagement'of the dog 19 with the pin 19 restore the parts to normalposition, the movement of the arm 18 being arrested prior to the time atwhich the dog would release the toggle lever 16*.

Mounted in ears 12 on theforward face of the bracket 12 is a pawl 24:having a bifurcated end 2-1 and provided adjacent to such end with anotch 24, in which one end of a bell crank 25 pivoted in forwardly projeating ears 12 on the bracket 12 is adapted to engage, the opposite endof such bell crank projecting forwardly and rearwardly between a pin 27and a block 27 which project from the forward face of the slide 13. Inthe normal position of these parts the pawl lies behind the plane inwhich the low-pipe 1s oscillated. up and down, but upon the release ofthe toggle levers to bring the gage mold into contact with the gather,'

Fig. 2). It will be noted thatthis forward projection of the pawl is butmomentary,

' including the period of the impact of the gage mold on thegather. Whenthe slide returns to normal position the pin 27 restores the parts 2 1and 25 also to normal position.

lVith the gage mold mechanism above describedl have shown associated amarvering mechanism, although I do not wish to restrict my invention toa process involving both marvering and gaging. This mechanis m comprisesan upper and a lower marvering plate 30 and 31, respectively,independently adjustably mounted on the outer end of a bifurcated frame32, one of the said plates being above and the other below the gagemold. The frame 32 is pivoted at 82 on the lug 19 projecting forwardlyfrom the bracket 12, and straddles the ears12 and 12 thereon, anupwardly projecting tail 32* on the frame 32 projecting inwardly towardthe pivotal point of the blow-pipe frame and in front of the frame 11.The marverer frame is normally drawn rearwardly from the plane in whichthe blowpipe oscillates by a spring 33, but its motion in this respectis arrested by a catch 34 pivoted on the front face of the bracket 12and engaging the tail 32", the catch being so positioned that upon themovement of the blow-pipe frame to its uppermost limit, the lat'mr willlift the catch and thus release the marverer frame to permit the spring33 to withdraw the marverer plates away from the plane of oscillation ofthe blow-pipe. By the means before described the marverer plates areheld in proper posi'- tion during the upward movement of the gather uponthe blow-pipe to marver the gather but. are withdrawn to permit thedescent of the blow-pipe without causing. the gather thereon to come incontact with such plates. For the purpose of restoring the maivererplate to normal position, a cam arm 35 projects rearwardly and upwardlyfrom the blow-pipe frame, and is adapted, after the gather on theblow-pipe has on its descent passed the marverer plates, to restore thelatter to normal position, where they will be caught by the latch 34. I

In case the marverer plates are to be used they are so set that thelower plate 31 on which the glass is first worked is at an angle to theaxial line of the blow-pipe, whereby agather having the general formshown in Fig. 8" will after passing thereover, be the given shape of anirregular truncated cone, and the surplus of the gather worked back, to"a greater or less extent, upon the blow-pipe. It is in this shape whenbrought opposite the gage mold, which is projected thereon. Inasmuch asthe cavity of this has a definite capacity and as the gage mold in everyoperation is moved forward a uniform distance and is brought within afixed distance of the blow-pipe, which are of like distributed to formthe finished article, it

will be seen that each blank after the gage mold has come in contacttherewith consists of a uniform quantity of material which will beutilized in the subsequent manufacture of the finished article. Aftermomentary shaping by the gage mold the upward movement of the blow-pipe,which in the construction here described is momentarily arrested duringthe gaging, brings the gaged blank thereon into contact with the uppermarverer 30 by which the blank is slightly elongated and by which anyimperfections left by the gage mold are eliminated. The blank is nowready for elongation and blowing and I prefer to accomplish this by themechanism shown in my other Patent No. 1,124,699, dated Jan. 12, 1915,.in which a limited and definite quantityof air is forcibly injected intothe blank before elongation, this being the more desirableas the mouthof the internal bore of the blow-pipe is now closed by the glass andwhich has been forced therein during the gaging. For

' this purpose the chuck shown in Fig. 9 may be of a form shown in mysaid Patent No. 1,124,699.

I do not-in this application make any claims on mechanism herein shownand described, as claims herein are directed to the process hereinshown, and claims upon the mechanism form the subject -matter of myother applications to-wit,--Serial No. 491,812, filed April 23, 1909,Serial No. 551,198, filed March 23, 1910, Serial No. 657269, filed Oct.28, 1911, and Serial No. 504 filed January 4, 1915, now pending in theU. S. Patent Oflice.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. The hereinbefore described process of forming glass blanks whichconsists in ai'iixing a solid batch of glass upon an iron, the glassprojecting beyond the end thereof and subsequently pressing the glassrearwardly on the iron while limiting the lateral spread of the glassuntil only a definite and measured quantity thereof remains beyond thewhose cubic contents is less than the cubic contents of the batch ofglass whereby a part of such batch is displaced rearwardly along theblow pipe.

4. The hereinbefore described process of forming solid glass blankswhich consists in gathering abatch of glass on a gathering -tool, andthen shaping while on the tool a part of the batch of glass to a uniformsize and shape by the momentary impact therewith of the walls of acavity'having a predetermined size and shape of less cubic contents thanthe batch of glass, whereby a part of said batch of glass is displacedrearwardly on the gathering tool.

5. The hereinbefore described process of forming solid blanks whichconsists in gathering a batch of glass on the end of a gathering tool,working the same upon a marverer to accomplish a partial shaping anddistribution of the glass and in momentarily inclosing the marveredblank in a cavity of definite size and shape having less cubic contentsthan the marvered blank whereby a part of the blank is forcedrearwardly'on the gathering tool.

6. The hereinbefore described process of forming solid blanks whichconsists in gathering a batch of glass on the end of a gathering tool,working the same upon a marverer to accomplish a partial shaping anddistribution of the glass; in momentarily inclos;

ing the marvered blank in a cavity of definite size and shape and inthen again subjecting the blank to the action of a marvererto,.partially elongate the same.

7. The hereinbefore described process of forming solid blanks whichconsists in working a mass of glass by side pressure, applying endpressure to the glass thus worked to upset it and in then working theglass by side pressure to a cylindrical form, whereby it is elongated.

8. The'hereinbefore described process of forming solid blanks whichconsists in side pressure, in then applying end pressure to the glassand simultaneously limiting the side spread thereofcaused thereby, andin then working the glass tocylindrical form by side pressure, wherebyit is caused to elongate.

9. The hereinbefore described process of forming solid blanks whichconsists in working by side pressure a mass of glass into tapered formand thenlinto a cylindrical form, whereby it is forcibly elongated.

10. The hereinbefore described process of forming solid blanks whichconsists in working a mass of glass in byside pressure, applying endpressure to the glass thus tapered to upset it and in then working theglass by side pressure to a cylindrical form, whereby it is elongated.

11. The hereinbefore described process of forming solid blanks whichconsists in working a mass of glass into tapered form by side pressure,in then applying end'pres sure to the glass and simultaneously limitingthe side spread thereof caused thereby, and in then working the glass tocylindrical form by side pressure, whereby it is caused to elongate.

12. The hereinbefore described process of forming solid blanks whichconsists in aflixing a'batch of glass to the endof a blow iron, and incausing it to project from the end thereof, working the projectingportion of the glass by side pressure, and in then applying end pressureto the projected portion of the glass while limiting its side 13. Thehereiiibefore described process of working glass which consists informing a blank by affixing a solid batch of glass upon an iron, theglass projecting beyond the end thereof,\ working such glass upon amarverer to partially shape and distribute the glass, in pressing'thesolid glass rearwardly on the iron while limiting the lateral spread ofthe glass by inclosing the marvered blank in a cavity of definite sizeand shape, and then again subjecting the blank to the action of amarverer to finish the surface thereof, and then blowing the solidg'aged portion of the blank so formed.

14. The hereinbefore described process of working glass which consistsin forming a blank by afiixing a solid batch of glass upon an iron, theglass projecting beyond the end thereof, working such glass upon amarverer to partially shape and distribute the glass, in pressing thesolid glass rearwardly on the iron while limiting the lateral spread ofthe glass by momentarily inclosing the marvered blank in a cavity ofdefinite size and shape and then again subjecting the blank to theaction of a marverer-to finish the surface thereof, and then blowing thesolid gaged portion of the blank so formed.

15. The hereinbefore described process of working glass which consistsin forming a blank by afiixing a solid batch of glass upon an iron, theglass projecting beyond the end thereof, in pressing the solid glassrearwardly on the iron while limiting the lateral spread of the glass byinclosing the blank in a cavity of definite size and shape and thenagain subjecting the blank to the action of a marverer to finishthe-surface thereof, and then blowing the sohd gaged portion of theblank so formed.

16. The hereinbefore described process of working glass which consistsin forming a blank by afiixing a solid batch of glass upon an iron, theglass projecting beyond the end thereof in pressing the solid glassrear- Wardly on the iron hile limiting the lateral spread of the glassby momentarily inclosingthe marvered blank in a cavity. of definite sizeand shape, and then again subjecting the blank to the action or amarverer to finish the surface thereof and then blowing the solid gagedportion of the blank so formed,

17. The hcreinbefore described process of Working glass which consistsin. gathering a batch of glass on the end of a gathering tool, Workingthe same upon a marverer to partially shape and distribute the glass sothat the glass projects beyond theiend of a tool, in pressingthemesultant solid glass blank rearwardly on the iron While limiting thelateral spread ofthe glass hy momentarily inclosing the inarvered blankin a cavity of 'tool, Working the same upon a marverer to partiallyshape and distribute the glass so that the glass projects beyond the endof a tool, in pressing the resultant solid glass blank rearwarclly onthe iron while limiting the lateral spread of the glass by inclosing themarvered blank in a cavity of definite size and shape having less cubiccontents than the marvered blank, whereby a part of the blank is forcedrearwardly on the gathering tool, and in blowing the solid gaged portionof the blank so formed.

In testimony whereof I have hereunto signed my name, I

BENJAMIN D. CHAMBERLIN. In presence of-. DELPHINE KEAGLE, it. Conrrs.

